10 Cross-Channel Verification (CCV)
Cross-Channel Verification Functionality
The cross-channel verification functionality (CCV) of the fetal monitors compares all monitored heart
rates (maternal and fetal), and indicates automatically whether any two channels are picking up the
same signal, or monitoring similar values.
If the fetal monitor detects that any channels have the same or similar values, the
issued with an INOP tone that can have a configurable delay. In addition, yellow question marks
appear next to the numerics on the touch screen that have the same or similar values. On the recording
trace there is also a question mark from the point where recorded traces continuously overlap.
Visual Aids for CCV Detection
Overview of Cross-Channel Comparisons
Measurements from Transducers
Maternal heart rate
Measurement Comparison Done by the Fetal Monitor for Cross-Channel Verification
INOP appears on the screen of the fetal monitor.
Question mark appears on the screen of the fetal monitor next to the
numerics that show the same or similar values.
Question mark recorded on the trace from the point where two
measured values coincide.
From Ultrasound or CL Ultrasound transducer
From a fetal scalp electrode
From Toco MP, or CL Toco
or CL SpO
From MECG electrodes